What is are the 3 most possible places to get liquefaction in San Francisco?
100
1. Richter Scale
2. Seismograph
3. Siesmometers
What are the 3 scales to measure an earthquake?
200
P-wave
Which comes first...
1.P-wave
2.S-wave
200
1.normal
2.reverse
3.strike slip
What are the 3 different types of faults?
200
People start to walk out of there homes and out of safety thinking that its all over and then the aftershock comes and loose debri can fall on people.
Why are after shocks more dangerous than the earthquake?
200
An earthquake's violent shacking turns loose soil into liquid mud.
What is liquefaction?
200
The Mercalli Scale
What is another scale?
300
1. The S-wave moves up and down.
2. The P-wave moves side to side.
What motions do the seismic waves move in?
300
1. The Normal Fault causes tension.
2. The Reverse Fault causes compression.
3. The Strike Slip Fault causes shearing.
What types of stresses does each fault cause?
300
An earthquake that happens after a larger earthquake in the same area.
What is an after shock?
300
To build your house on a concrete foundation.
What is one way to help liquefaction protection for your house?
300
The size or extent of something.
What is magnitude?
400
The S-wave goes up and down that makes it slower through liquid.
Why does the S-wave hit the surface crust after the P-wave?
400
footwall and hanging wall
What wall do the normal and reverse faults create?
400
Minutes, hours, days, and even months after.
How much time later can an aftershock happen?
400
Yes, it adds more liquid for liquefying the muds that makes thing sink faster.
Does heavy rain affect the danger of liquefaction? If so how?
400
10 times
how much does a magnitude increase when it goes from 3 to 4?
500
S-wave because it has a bigger amplitude and how things get loose from the P-wave the S-wave can collapse them more easily.
Which seismic wave is more destructive? Why?
500
Waterfalls
What landforms do normal faults create?
500
Stay near somewhere you can duck under to stay safe.
What are some ways to stay safe after an earthquake?
500
Buildings sink and pull apart
What damage does liquefaction do?
500
1.The Richter Scale is the scale were the scientists assign the earthquake a number for it's energy.
2.The seismograph finds the epicenter of the earthquake.
3.The Seismometer measures the movement for the Richter Scale.